CN106351838A - Plastic rotor for a vacuum pump - Google Patents

Plastic rotor for a vacuum pump Download PDF

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Publication number
CN106351838A
CN106351838A CN201610547691.6A CN201610547691A CN106351838A CN 106351838 A CN106351838 A CN 106351838A CN 201610547691 A CN201610547691 A CN 201610547691A CN 106351838 A CN106351838 A CN 106351838A
Authority
CN
China
Prior art keywords
rotor
axle supporting
axle
matrix
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610547691.6A
Other languages
Chinese (zh)
Other versions
CN106351838B (en
Inventor
汉斯-彼得·奥特
贝恩德·赫斯
马丁·托马
托马斯·古尔德
托尔斯滕·赫勒
弗里德黑尔姆·普菲策尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joma Polytec GmbH
Original Assignee
Joma Polytec GmbH
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Filing date
Publication date
Application filed by Joma Polytec GmbH filed Critical Joma Polytec GmbH
Publication of CN106351838A publication Critical patent/CN106351838A/en
Application granted granted Critical
Publication of CN106351838B publication Critical patent/CN106351838B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0078—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3448—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member with axially movable vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3446—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
    • F04C18/3447—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface the vanes having the form of rollers, slippers or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A rotor for a vane cell pump, in particular, for a vacuum pump with a base body that is made of plastic and can be driven by rotation, and that rotates about an axis of rotation during operation, wherein the base body comprises a guiding section for slidably receiving a pump vane and wherein the base body is flanked in the direction of the axis of rotation by a first bearing surface and a second bearing surface, wherein the second bearing surface comprises bearing sections that are at a distance from one another and that lie on a circuit path that is arranged concentrically to the axis of rotation.

Description

Plastic rotor for vacuum pump
Technical field
The present invention relates to a kind of for vane pump, the rotor that is used in particular for vacuum pump, this rotor has by moulding The matrix of the rotatable driving that material is made, this matrix is in operation around rotation axiss rotation, wherein, this base Body has the guide portion for slidably receiving pump blade, and wherein, first axle supporting portion and the second axle Supporting portion is located at this matrix both sides on the direction of rotation axiss.Moreover, it relates to a kind of blade Pump, particularly to the vacuum pump including such rotor.
Background technology
Rotor for vane pump well known in the art.Such rotor generally has the guiding of cylinder Portion, it has at least one for the blade well slidably receiving pump blade, wherein, the two of guide portion The e axle supporting position of cylinder is respectively provided with side, it is accommodated in the accordingly corresponding supporting of pump case So that rotor is rotatably supported by pump case in groove.In the region of guide portion, such turn Sub- external diameter is more than in the external diameter in the region at e axle supporting position so that setting between guide portion and e axle supporting position Put axle chamfered edge, this axle chamfered edge also is used as the block in the supporting groove of pump case.For example also exist Known such rotor in de102012210 048 a1.
Rotor for vane pump is typically constructed of metal, and wherein, rotor is cast unhelpful shape.So And in addition it is also known that, the rotor for vane pump can be manufactured in plastics casting die.But be made of plastics Rotor shown in, the solid embodiment of the matrix of rotor may result in formation shrinkage cavity.In order to avoid forming contracting Hole, well known in the art, in the axle chamfered edge of the form of annular rings of guide portion, groove is set in the base, The diameter with diameter greater than e axle supporting position of guide portion.However, such groove only can be in relatively short rotor In the case of realized with relatively large diameter or relatively large axle chamfered edge.However, the feelings in relatively long rotor Under condition, it is problematic for realizing described way with relatively small diameter, because guide portion and e axle supporting position Different diameters be not suitable for building sufficiently large groove.
Content of the invention
Therefore, it is an object of the invention to, provide a kind of for vane pump, moulding of being used in particular for vacuum pump Material rotor, wherein, can simply and reliably prevent from forming shrinkage cavity.
This purpose is realized by rotor feature, being used for vane pump with claim 1.This rotor Be characterised by, the second e axle supporting position have be located at the circuit orbit of rotation axiss arranged concentric on, phase The mutually supporting part at interval.This segmented construction at the second e axle supporting position proves particularly advantageous, because recessed The arrangement of groove is not only feasible in the region of the axle chamfered edge of annulus class form.
Therefore, it is special when matrix has and starts the groove along rotation axiss extension from the second e axle supporting position Not preferred.Advantageously, groove is built into cylinder or substantial cylindrical in this wise, i.e. compression mod Can simply shape.In addition following situations prove particularly advantageous, i.e. when groove radially extends until entering Second e axle supporting position.As normally, the matrix of rotor has blade well in the region of guide portion, two Blade between individual face is slidably received within this blade well, and wherein, guide portion is preferably built into cylinder 's.
Advantageously, the second e axle supporting position has the circular arc portion of two mutual diametrically contrapositions, this circular arc portion It is respectively provided with supporting part in radial outside.The following situation of here is particularly preferred, i.e. work as circular arc portion Limited by the plane of two blade well arrangements parallel to guide portion respectively, and it is limited to and circuit orbit On the supporting part of arranged concentric.
In addition following situations are favourable, i.e. when the second e axle supporting position is respectively provided between circular arc portion During at least one, preferably two tab portion, this tab portion has supporting part on its free end.Logical Cross the tab portion being arranged on arrangement between circular arc portion, it is right additionally to realize in the supporting part of circular arc portion Another radial directed at the second e axle supporting position, wherein, can arrange bigger groove between beams.
Another advantageous extension scheme of rotor proposes, the second e axle supporting position is built into cylinder. Because supporting part is disposed on circuit orbit, the enveloping surface (umhuellende) at the second e axle supporting position In rotor operation, i.e. be built into when rotating around rotation axiss cylinder.In addition following situations are Particularly advantageous, i.e. first axle supporting portion is built into cylinder.Thus, for supporting rotor One and second e axle supporting position can be accommodated in the cylinder shape groove of pump case.
Another expedients scheme of rotor proposes, and rotor has the hole with rotation axiss arranged concentric, this hole It is passed through in first axle supporting portion, and guide portion has blade well, wherein, hole and blade well fluids in end face Connect.By arranging the hole being connected with rotation axiss arranged concentric with blade well fluids, it is possible to provide be used for The fuel feeding of lubrication pump blade.
One of rotor particularly advantageous expansion scheme proposes, and has the metal insert that torque transfer part divides and exists Inserted in locking manner in matrix by shape in the region of first axle supporting portion.The following situation of here is particularly advantageous, That is, insert is by the plastics extrusion encapsulation of matrix.The insert that torque transfer part is divided is had by setting, all Rotary motion as bel-drivenn or the driver element of motor can be passed on pump rotor.
In order to reliably transmit rotary movement on pump rotor, following situations are favourable, i.e. insert It is arranged with one heart with rotation axiss.
In order to shape is connected cohesively together insert and matrix, following situations are favourable, i.e. insert is fabricated When becoming cylindrical and on its outer circumferential side, there is teeth portion.In addition following situations are particularly advantageous, i.e. base Body have corresponding with teeth portion to teeth portion.Advantageously, matrix this to teeth portion the extrusion encapsulation by insert Manufactured.
In a particularly advantageous embodiment of rotor, teeth portion is built into dovetail form in this wise, That is, the tooth radial outward dilations of teeth portion.The expansion of this dovetail form of the tooth of teeth portion is favourable, because Pump rotor can avoid the matrix being made of plastics to open in running.Additionally, matrix can be pulled to metal insert On.
Following situations prove particularly advantageous, i.e. insert is made by sintered steel, by steel or by pyrite.
In addition it is contemplated that it is interior hexagonal or two planes that torque transfer part is divided.But it can also be envisaged that passed using moment of torsion Other probabilities passed or other cross sections.
Above-mentioned purpose is realized also by the vane pump of the feature with claim 13, especially through vacuum pump.
Brief description
Other details and the advantageous extension of the present invention can hereinafter be obtained, further describe and demonstrate in conjunction with it Embodiment illustrated in the accompanying drawings.In accompanying drawing:
Fig. 1 is the oblique view of the pump rotor according to the present invention when observing first axle supporting portion；
Fig. 2 illustrates the oblique view of the pump rotor according to Fig. 1 with exploded view；
Fig. 3 is the oblique view of the pump rotor according to Fig. 1 and 2 when observing the second e axle supporting position；
Fig. 4 illustrates the section by the pump rotor according to Fig. 1 to 3 by the face iv according to Fig. 3；
Fig. 5 illustrates the section perpendicular to rotation axiss by the pump rotor according to Fig. 1 to 3；
Fig. 6 is detail view vi in the section by the pump rotor according to Fig. 5；And
Fig. 7 is the side view of the pump rotor according to Fig. 1 to 3 when observing the second e axle supporting position.
Specific embodiment
Fig. 1 illustrates for unshowned vane pump in the accompanying drawings, the pump rotor 10 that is used in particular for vacuum pump. In the accompanying drawings, identical component and part are represented with identical reference marker.Pump rotor 10 has by plastics system The matrix 12 becoming, this matrix is in operation and rotates around rotation axiss 14.Matrix 12 has guide portion 16, This guide portion has the blade well 18 for slidably receiving pump blade.Here, blade well 18 is flat by two The face 20,22 of row limits, and it provides the guiding for pump blade.
On the direction of rotation axiss 14, first axle supporting portion 24 and the second e axle supporting position 26 are located at and draw Lead portion 16 both sides, wherein, the diameter with diameter greater than first axle supporting portion 24 of guide portion 16 so that Disposed axle chamfered edge 28 between first axle supporting portion 24 and guide portion 16.First axle supporting portion 24 is fabricated Become cylinder.First axle supporting portion 24 and the second e axle supporting position 26 are fabricated in this wise, i.e. its Can be accommodated in the cylinder-shaped bearing receiving portion of unshowned pump case.
Matrix 12 is rotatable driving, and has by burning in the region of first axle supporting portion 24 to this Tie the metal insert 30 that metal or pyrite are made, it is arranged with one heart with rotation axiss 14.According to figure It may be clearly seen that metal insert 30 in 2 exploded view.This insert 30 has hexagonal moment of torsion transmission Part 32, it can be clear that in figs. 5 and 6.Divide 32 by arranging torque transfer part, such as belt The rotary motion of the driver element of transmission or motor can be passed on pump rotor 10.
In order to be delivered to matrix 12 moment of torsion from insert 30, insert 30 shape is inserted into matrix in locking manner In 12.Especially, insert 30 is by the plastics extrusion encapsulation of matrix.In order to transfer torque to matrix 12 On, insert 30 has the teeth portion 36 being clearly seen in Fig. 3,5 and 6 on its outer circumferential side 34.Logical Cross extrusion encapsulation insert 30, matrix 12 has corresponding to teeth portion 36 to teeth portion 38, it equally can be in figure 3rd, it is clear that in 5 and 6.Here, Fig. 5 illustrates by the rotation axiss perpendicular to pump rotor 10 The section of the pump rotor 10 in 14 planes, wherein, Fig. 6 illustrates detail view vi in the section according to Fig. 5.
The teeth portion 36 of insert 30 is built into dovetail form, and has multiple teeth 40.Especially, tooth Portion 36 is become dovetail form by framework in this wise, i.e. the tooth 40 of teeth portion 36 is radially outward, i.e. perpendicular to Rotation axiss 14 are expanded.Here, the side 42 of tooth 40 and tooth median surface 44 angulation 46.Tooth 40 The expansion of this dovetail form is favourable, because can prevent the matrix being made of plastics in pump rotor 10 runs 12 open.
Fig. 3 is shown in the stravismus of the pump rotor 10 according to Fig. 1 and 2 when observing the second e axle supporting position 26 Figure.
Fig. 4 illustrates the section by plane iv according to Fig. 3 by pump rotor 10, and wherein, Fig. 7 shows Go out the side-looking of pump rotor 10 when the side of arrow 48 shown in figure 3 looks up the second e axle supporting position 26 Figure.
As being clearly seen in the figure 7, the second e axle supporting position 26 has positioned at same with rotation axiss 14 On the circuit orbit of heart arrangement, spaced supporting part 50.Here is as being clearly seen in figure 3 , the second e axle supporting position 26 is built into cylinder.Now when pump rotor 10 is in operation in arrow When 52 side rotates up, form the enveloping surface at the second e axle supporting position 26, it is built into cylinder.
Second e axle supporting position 26 has the circular arc portion 54 of two mutual diametrically contrapositions, and it is radially outward distinguished There is supporting part 50.The face 56,58 that circular arc portion 54 is arranged parallel to blade well 18 by two limit and Be limited in the supporting part 50 of circuit orbit arranged concentric on.Can be clearly in the view according to Fig. 7 See circular arc portion 54.
It is respectively arranged two tab portions 60,62 between circular arc portion 54, it equally has on its free end There is supporting part 50.By being arranged on the tab portion 60,62 of arrangement between circular arc portion 54, can be extra Supporting part 50 in circular arc portion 54 carries out other radial directed to the second e axle supporting position 26.
Therefore, the second e axle supporting position 26 be built into being segmented with circular arc portion 54 and tab portion 60, 62, because the supporting part 50 being located on circuit orbit is spaced.This point at the second e axle supporting position 26 The structure of section proves particularly advantageous, because can be between circular arc portion 54 and tab portion 60,62 Groove 64 is arranged in matrix 12.
As can be clearly seen in the section according to Fig. 4, extend almost up in first axle in this groove 64 Axle chamfered edge 28 in the region of supporting portion 24 and be built into substantial cylindrical, wherein, in the accompanying drawings The shaping inclined-plane that cannot see that is set, and it makes formable die tool.Additionally in groove 64, in the second axle Also arrange groove 66 in the circular arc portion 54 of supporting portion 26, but it extends only through first axle support Position 26.
Due to groove 64,66, matrix 12 can be had wall thickness as constant as possible by die casting in casting die, and It is avoided as much as much as possible or substantially forming shrinkage cavity.
As can be according to be clearly seen in the section of Fig. 4, pump rotor 10 has the concentric cloth with rotation axiss 14 The blind hole 68 put, this blind hole is passed through in first axle supporting portion 24 in end face, and with blade well 18 in this wise Fluidly connect, i.e. can provide for lubricating the fuel feeding of the pump blade of arrangement of sliding in blade well 18.

Claims (13)

1. a kind of for vane pump, the rotor (10) that is used in particular for vacuum pump, this rotor has by plastics system The matrix (12) of the rotatable driving becoming, this matrix is in operation around rotation axiss (14) rotation, wherein, base Body (12) has the guide portion (16) for slidably receiving pump blade, and wherein, first axle supporting portion (24) With the second e axle supporting position (26) on the direction of rotation axiss (14) be located at matrix (12) both sides it is characterised in that Second e axle supporting position (26) have be located at the circuit orbit of rotation axiss (14) arranged concentric on, mutually The supporting part (50) at interval.
2. rotor (10) according to claim 1 is it is characterised in that matrix (12) has from the second axle The groove (64,66) that supporting portion (26) beginning extends along rotation axiss (14).
3. rotor (10) according to claim 1 and 2 is it is characterised in that the second e axle supporting position (26) There is the circular arc portion (54) of two mutual diametrically contrapositions, this circular arc portion is respectively provided with support in radial outside Divide (50).
4. rotor (10) according to claim 3 is it is characterised in that the second e axle supporting position (26) exists It is respectively provided with least one, preferably two tab portion (60,62), this tab portion between circular arc portion (54) Supporting part (50) is had on its free end.
5. according at least one described rotor (10) in aforementioned claim it is characterised in that the second axle props up Bearing portion position (26) is built into cylinder.
6. according at least one described rotor (10) in aforementioned claim it is characterised in that rotor (10) There is the hole (68) with rotation axiss (14) arranged concentric, this hole is passed through in first axle supporting portion (24) in end face, And guide portion (16) has blade well (18), wherein, hole (68) are fluidly connected with blade well (18).
7. according at least one described rotor (10) in aforementioned claim it is characterised in that having moment of torsion The metal insert (30) of transmitting portions (32) is inserted in locking manner by shape in the region of first axle supporting portion (24) In matrix (12).
8. rotor (10) according to claim 7 is it is characterised in that insert (30) and rotation axiss (14) It is arranged with one heart.
9. the rotor according to claim 7 or 8 (10) is it is characterised in that insert (30) is fabricated Become cylindrical and teeth portion (36) is had on its outer circumferential side (34).
10. rotor (10) according to claim 9 is it is characterised in that teeth portion (36) is built in this wise Become dovetail form, i.e. tooth (40) radial outward dilations of teeth portion (36).
11. according at least one described rotor (10) in claim 7 to 10 it is characterised in that insertion Part (30) is made by sintered steel, by steel or by pyrite.
12. according at least one described rotor (10) in claim 7 to 11 it is characterised in that moment of torsion Transmitting portions (32) are interior hexagonal or two planes.
A kind of 13. vane pumps, particularly vacuum pump, including according at least one in aforementioned claim Rotor (10).
CN201610547691.6A 2015-07-13 2016-07-12 Plastic rotor for vacuum pump Active CN106351838B (en)

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US4384828A (en) * 1979-09-21 1983-05-24 Robert Bosch Gmbh Sliding vane compressor
DE3150569A1 (en) * 1981-12-21 1983-06-30 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Vane cell pump
WO2003036094A2 (en) * 2001-10-15 2003-05-01 Luk Automobiltechnik & Co. Kg Vacuum pump
WO2004083604A1 (en) * 2003-03-21 2004-09-30 Luk Automobiltechnik Gmbh & Co. Kg Pump rotor
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CN104471249A (en) * 2012-06-14 2015-03-25 悦马塑料技术有限公司 Positive displacement pump

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107313940A (en) * 2017-07-28 2017-11-03 威伯科汽车控制系统（中国）有限公司 A kind of housing and vavuum pump
CN107313940B (en) * 2017-07-28 2019-10-08 威伯科汽车控制系统（中国）有限公司 A kind of shell and vacuum pump

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US20170016445A1 (en) 2017-01-19
DE102015213099B3 (en) 2016-08-04
EP3118456A1 (en) 2017-01-18
CN106351838B (en) 2019-02-19
EP3118456B1 (en) 2022-02-23
US10138888B2 (en) 2018-11-27

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